477749978 has 8 divisors (see below), whose sum is σ = 719071668. Its totient is φ = 238059424.

The previous prime is 477749969. The next prime is 477750017. The reversal of 477749978 is 879947774.

It can be written as a sum of positive squares in 2 ways, for example, as 457831609 + 19918369 = 21397^2 + 4463^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 477749978.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 407051 + ... + 408222.

Almost surely, 2^477749978 is an apocalyptic number.

477749978 is a deficient number, since it is larger than the sum of its proper divisors (241321690).

477749978 is a wasteful number, since it uses less digits than its factorization.

477749978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 815568.

The product of its digits is 24893568, while the sum is 62.

The square root of 477749978 is about 21857.4924911345. The cubic root of 477749978 is about 781.7482035462.

The spelling of 477749978 in words is "four hundred seventy-seven million, seven hundred forty-nine thousand, nine hundred seventy-eight".